diff options
author | Eric Biggers <ebiggers@google.com> | 2017-11-17 11:50:27 -0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-21 09:23:21 +0100 |
commit | a5bd3edda619965bdaeb198f49b3713b4051ef39 (patch) | |
tree | 288d391ccf1ae91bbb0aab4676a3f7965a9ee77e /ipc | |
parent | 49c1e5f032382713933a86fa1077c438b430f6fc (diff) |
arm: crypto: reduce priority of bit-sliced AES cipher
[ Not upstream because this is a minimal fix for a bug where arm32
kernels can use a much slower implementation of AES than is actually
available, potentially forcing vendors to disable encryption on their
devices.]
All the aes-bs (bit-sliced) and aes-ce (cryptographic extensions)
algorithms had a priority of 300. This is undesirable because it means
an aes-bs algorithm may be used when an aes-ce algorithm is available.
The aes-ce algorithms have much better performance (up to 10x faster).
Fix it by decreasing the priority of the aes-bs algorithms to 250.
This was fixed upstream by commit cc477bf64573 ("crypto: arm/aes -
replace bit-sliced OpenSSL NEON code"), but it was just a small part of
a complete rewrite. This patch just fixes the priority bug for older
kernels.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Diffstat (limited to 'ipc')
0 files changed, 0 insertions, 0 deletions